Device for cementing wells and cisterns



(No Model.)

W. H. H. DAVIS. DEVICE FOR GEMENTING WELLS AND GISTEBNS.

No. 473,828. Patented Apr. 26, 1892.

ATTORNEY.

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UNITED STATES PATENT ()EEIcE.

WILLIAM H. H. DAVIS, OF OAKFIELD, MICHIGAN.

DEVICE FOR CEMENTING WELLS AND CISTERNS.

SPECIFICATION forming part of Letters Patent No. 473,828, dated April26, 1892.

Application filed July 23, 1891. Serial No. 400,426- (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM H. H. DAVIS, a citizen of the United States,residing at Oakfield,i'n the county of Kent and State of Michigan, haveinvented certain new and useful Improvements in Devices for CementingWells and Oisterns; and I do hereby declare the followingto be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The natureof my invention consists in improvements in the constructionof the cylinder described in my patent, No. 248,922, of November 1,1881, by which it is more easily controlled and adjusted to the work tobe done and more especially adapted for the ease and convenience of theworkman operating the same. These objects are attained by the mechanismillustrated in the accompanying drawings, in which- Figure 1 is aVertical section of the cylinder. Fig. 2 is a plan view of the same withits cover removed. Fig. 3 is a plan view of its cover. Fig. 4c is adetail view of the wedgeblooks, and Fig. 5 is a detail view of amoditied device for fastening the cylinder-band.

The main difference between this cylinder and the one described in myabove-named patent of November 1, 1881, consists, first, in the mannerof raising the same with the crossbars attached below the center of thecylinder, thus enabling the operator to more easily step over the same;second, in the construction of a top cover in such a manner that theworkman can stand on the platform below and at the same time have themortar at the top of the cylinder on the cover convenient for use;third, in supporting a platform or bottom cover by means of bailsinstead of on a bottom run or band, and, fourth, in adjusting the run ofthe cylinder (the top end) by means of the holes and pin in the ends ofthe band and the lower end by means of wedge and block attachments.

The shell or forming-cylinder A is usually made about thirty. inches indiameter and about the same height of about No. 16 sheet metal, coiledwith the edges lapping about six inches, which stiflt'ens the cylinderat the joint and prevents too much spring while tamping down the mortar.It is provided with the eX tensible and reducible top band C, firmlyriveted to the cylinder, except about eight inches of one end, whichallows the inside lapping edge of the cylinder to slide between the bandand the outside shell and is held in this smaller diameter by means ofthe pin D and holes E when it is necessary to lower or raise the samethrough a part of the wall of the well that is already completed, as issometimes the case when wells have to be deepened by reason of the waterfailing.

The main use of the cover B is for a mortar-board. It is provided withstays O, fitting firmly against the band 0, thus holding the cover toits place. One side of the cover is cut out to provide an opening largeenough for the operator to stand on the platform near the bottom of thecylinder, in which position he can place the mortar and remove theoutside curbing much more conveniently than can be done with a cylinderhaving a full top cover or only a bottom cover. This cut-away portion ofthe cover 13 is provided with flanged edges 13, whereby that portion ofthe cover is strengthened. also does away with a sharp edge of the coverthat would otherwise be in contact with the operator, and besides itforms an elevated band or rim to keep the mortar in place.

To the inside of the cylinderA are riveted four hangers H, to which areattached the rings 1, that support the bails J, and the platform-boardsK and K,on which the operator stands. This platform is suspended nearthe bottom of the cylinder A and is of a little smaller diameter, so asnot to bind against the cylinder.

The platform K K may be suspended from the cross-bars, as in my patent,No. 371,039, of October 4, 1887, or even placed on the top of ripecross-bars; but such construction leaves no support for the operatorwhen the crossbars are removed.

The four lugs L L are riveted to the cylinderA above theplatform-boards, under which the double cross-bars M M are placed forthe purpose of raising the cylinder by means of the rope N during theoperation of cementing, and also forming four points of draft on thecylinder A.

The wedge-blocks F and the wedge or key G are to regulate the pressureof the cylinder This flange B.

A to the grout wall of the well and are similar to those described in mypatent,No. 371,039, with the improvement of the groove F in the centerof the acting face of each block F, which firmly holds the wedge G toits place and prevents it from prying the wedge-blocks from the cylinderA, as sometimes happens when the wedge is driven directly in contactwith the cylinder.

The extensible and reducible band O,while it forms a stiffening-bandfor, the top of the cylinder A, is for the purpose of holding thecylinder at a smaller diameter while raising or lowering it through thecompleted wall of the well, and also, in combination with the wedge Grand grooved blocks F, to adjust the pressure of the cylinder to the workto be done, which in practice is usually at the largest diameter of theband C. This cylinder-band C can be made adjustable by means of adoubleset-screw S, with right and left threads operating through the innerprojecting end 0 of the band, as represented in Fig. 5; but the bandsprovided with the pin D and holes E are more easily constructed andoperated than by means of set-screws, as last described.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination, with a forming-cylinder for use in cementing wellsand cisterns, of a partial top cover having a cut-away portion,substantially as and for the purpose described.

2. The combination, with the forming-cylinder A, of the partial topcover B, having a cutaway portion provided with flanged edges B,

' substantially as described.

3. The combination, with the forming-cylinder A, having an extensibleand reducible top band C, of the partial top cover B, having stays O anda cut away portion provided with Yflanged edges B, substantially asdescribed.

4. The combination, with the f orming-cylinderA, of the extensible andreducible top band C, the wedge-blocks F, secured in the lower portionof the cylinder and having grooves F in the center-0f the acting facesof said blocks, and the wedge G, engaged in said grooves but out ofcontact with the cylinder, substantially as described.

5. The combination,with the forming-cylinder A, of the hangers H,secured to the inside of the cylinder, the bails J, suspended from saidhangers, and a platform supported by the bails, substantially asdescribed.

6. The combination, with the forming-cylinder A, of the partial topcover B, the bails J, suspended in said cylinder, and the platform .K K,supported by said bails, substantially as described.

7. The combination, with the forming-cylinder A, having an extensibleand reducible top band 0, grooved wedge-blocks F, and wedge G, of thepartial top cover B, the hangers H, secured to the inside of thecylinder, the bails J, suspended from said hangers, and a platformsupported by said bails, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

XVILLIAM H. H. DAVIS.

Vitu esses:

HARRY P. VAN WAGNER, D. M. OLMSTED.

